AUTH/2748/2/15 - Bayer v Novartis

Promotion of Lucentis

  • Received
    12 February 2015
  • Case number
    AUTH/2748/2/15
  • Applicable Code year
    2014
  • Completed
    24 June 2015
  • No breach Clause(s)
    2, 7.2, 7.4 and 7.10
  • Breach Clause(s)
    3.2, 7.2 (x3 ), 7.3 (x2), 7.4, 7.9 (x2) and 9.1
  • Sanctions applied
    Undertaking received
  • Additional sanctions
  • Appeal
    No appeal
  • Review
    August 2015

Case Summary

​Bayer plc submitted a complaint about claims made by Novartis Pharmaceuticals UK at two symposia which Novartis Pharma AG had sponsored at a European ophthalmology congress held in the UK in 2014. The claims related to the comparative safety profiles of Bayer's product Eylea (aflibercept) vs Novartis' product Lucentis (ranibizumab).

Eylea and Lucentis were intravitreal injections indicated, inter alia, for the treatment of neovascular (wet) age-related macular degeneration (AMD) and visual impairment due to diabetic macular oedema (DME). 

The detailed response from Novartis Pharmaceuticals UK is given below. 

​Bayer noted that the first symposium in question was entitled 'Forging the future in nAMD [neovascular age-related macular degeneration]: The role of anti-VEGF [anti-vascular endothelial growth factor] and novel therapeutic targets' and submitted that in inter-company dialogue, Novartis had acknowledged the promotional intent of this symposium. 

Data from two studies were presented to claim a statistically, significantly increased risk of endophthalmitis following injection of Eylea compared with injection of Lucentis (Kelly et al 2014 and Kiss et al 2014). However, the conclusions were based on a retrospective analysis of insurance claims. Neither study was a scientifically valid retrospective cohort study, nor did either try to obtain clinical data to confirm the alleged incidents of endophthalmitis. No standardised definition of endophthalmitis was applied so the events could not be validated as truly inflammatory in nature. Given the heterogenicity of these data, the confidence intervals and p-value reported in slides 44 and 47 clearly lacked scientific validity and did not represent the balance of the evidence for the two medicines. 

​Bayer alleged that Novartis did not try to balance the discussion of data from Kelly et al and Kiss et al (and the conclusions it drew from them) with data from the large, robust, randomised and double-masked phase 3 studies (VIEW 1 and VIEW 2) which compared Eylea and Lucentis in the treatment of wet AMD (Heier et al 2012). These studies concluded that Eylea was generally well tolerated and had a profile of ocular treatmentemergent adverse experiences, including serious ocular adverse events, similar to that for Lucentis. The results at 52 and 96 weeks of follow-up showed no difference in rates of endophthalmitis between Lucentis and Eylea (Heier et al, SchmidtErfurth et al 2014). Relevant sections (4.4 and 4.8) of the Eylea summary of product characteristics (SPC) did not mention any difference in risk of endophthalmitis compared with Lucentis; it just stated that endophthalmitis was a known risk with all intravitreal injections. 

Bayer submitted that there was selective presentation of data of weak scientific validity in the absence of data from robust, large, randomised controlled trials with follow-up to 2 years, which showed a very different conclusion. In addition, it was not disclosed in the symposium that Kiss et al was funded and co-authored by Genentech, the manufacturer of Lucentis and a business partner of Novartis. Bayer alleged that the overall representation of the safety profile of Eylea at this promotional symposium was unbalanced, inaccurate, misleading and did not fairly represent the totality of available evidence, in breach of the Code. 

The Panel noted that the presentation at issue focussed on endophthalmitis which was described as a rare but feared complication of intraocular surgery and intravitreal injection, its pathogenesis, management and new data on safety signals. 

​The new data were from two database studies, Kelly et al (VERO) and Kiss et al which looked at retrospective analysis of insurance claims taken from two different US payor claims databases. The studies were based on two separate databases although slide 44 stated, as did the speaker, that the database source data would overlap so that the same injection data might be included in both analyses. The Panel noted slide 43 was headed '“Big data” is of merit to explore safety signals'. The Panel noted Novartis' submission that the presentation made it clear that it was difficult to obtain robust information on endophthalmitis as pivotal studies such as VIEW 1 and 2 were not powered to detect differences in the frequency of such rare adverse events; this information could only be provided by very large data sets. A point not covered within the slides although stated by the speaker. In this regard, however, the Panel also noted Novartis' submission that although data from patient populations which were broader than those in phase 3 studies could be better for evaluating rare events, such data was not as confirmatory as phase 3 data. The Panel thus queried the claim 'Robust information on rare safety events can only be provided by very large data sets' (emphasis added). 

The Panel noted the limitations of the retrospective study of insurance claims. In the conclusion of his presentation the speaker noted that such data might show a difference between the treatments but 'that without doubt' clinical studies were needed to confirm such differences. The speaker stressed that the data in Kelly et al and Kiss et al was based on claims, payments and requests for payments; it was not clinical data. The Panel noted that Kelly et al concluded that all sensitivity analysis undertaken also supported the differences and that data from this retrospective analysis should be interpreted with caution, because of the inherent limitations of this type of study and limited understanding of mechanisms to explain the apparent difference in endophthalmitis risk with Eylea. Additional studies would be required to further explore the implications for clinical practice.

​The Panel noted the potential benefit and limitations of Kelly et al and Kiss et al. However the presentation did not contextualise the results presented for Kelly et al and Kiss et al with the limitations of that data, the clinical data on endophthalmitis or the frequency of endophthalmitis documented in each medicine's SPC. In that regard the presentation was not sufficiently complete to enable the delegates to form their own opinion of the therapeutic value of the medicines. A breach of the Code was ruled. The comparison of the two products was misleading. A breach of the Code was ruled. The Panel noted the limitations of the retrospective analysis of insurance claims taken from US payor claims databases including the possible variability of potential disease coding and physician experience. It did not consider that the presentation reflected all the available evidence. A breach of the Code was ruled.

Bayer alleged that slide 13 significantly overstated the dosing flexibility permitted by the new Lucentis label; it implied that physicians could use Lucentis as they pleased with no restrictions with regard to treatment intervals or follow-up/monitoring requirements. Bayer stated that the Lucentis SPC clearly stated that treatment must be initiated with one injection a month until maximum visual acuity was achieved and/or there were no signs of disease activity, and specified that there was also a minimum treatment interval. A treat-andextend regimen could only be followed when monthly treatment was established, and the patient stabilised, but even then the SPC gave clear guidance on the degree of flexibility permitted, with extensions for wet AMD limited to two weeks at a time. 

The Panel noted the Lucentis SPC only permitted flexibility in monitoring and treatment intervals once maximum visual acuity was achieved and/or there were no signs of disease activity. The Panel considered that this was not clear from slide 13. A breach of the Code was ruled. 

​Bayer alleged that the claim on slide 13 that Lucentis dosing was: 'Personalized' 'Physicians determine monitoring and treatment intervals* for optimal outcomes ....' was in conflict with the Lucentis SPC as regards its flexibility. In addition the claim that the new posology would deliver 'optimal outcomes' was a superlative which could not be substantiated. The claim of 'optimal outcomes' was a hanging comparison and thus the exact comparison made by Novartis was unclear, but there was no evidence that the current Lucentis posology offered clinical outcomes which were optimal compared with either proactive treatment with Eylea or reactive use of Lucentis with monthly monitoring (as per the previous Lucentis SPC). 

​The Panel noted the claim 'optimal outcomes' was part of the first stab point on slide 13 under the heading 'Introducing the new ranibizumab EU label, which supports a personalized treatment approach'. The Panel did not consider that the claim at issue was a superlative as alleged. In that regard the Panel noted that the claim at issue did not exclude the possibility that other treatment regimens could also provide optimal outcomes. The changes to the Lucentis SPC enabled prescribers to determine monitoring and treatment intervals such as to optimise treatment with Lucentis. In that regard the Panel did not consider that the claim was a hanging comparison as alleged. It was substantiated by the Lucentis SPC. The Panel ruled no breach of the Code.

​Bayer stated that with regard to the retrospective US health insurance data, slide 13 clearly stated that Kelly et al, (the VERO study) was sponsored by Novartis; this implied that the other retrospective study (Kiss et al) was independent. However, Kiss et al was supported by Genentech, the company which manufactured Lucentis and marketed it in the US. Further, from the abstract it appeared that one author was employed by Genentech Inc. Genentech was in commercial partnership with Novartis, which marketed Lucentis on its behalf outside the US. The disclosure was therefore incomplete and misleading about the independence of the data presented at the meeting. Bayer did not accept Novartis' assertion that it was reasonable to only disclose that it had supported Kelly et al as the author was also the presenter. Bayer stated that this was a promotional symposium, sponsored by Novartis, in which Novartis claimed comparatively greater safety for Lucentis vs Eylea based wholly on two studies which were both funded by companies which marketed Lucentis in their respective territories. This information would have been highly relevant to the audience in assessing any potential bias in these data. Accordingly, it was not acceptable for the funding details of both studies not to be made transparent; simply referencing the studies on the slide deck was insufficient. Bayer alleged a breach of the Code. 

​The Panel noted that the presenter was involved with one of the studies, which was mentioned on the disclosures made at the beginning of his presentation (slide 38) which included 'VERO study was sponsored by Novartis'. When presenting this he stated that as he was going to be talking about this study and it was a Novartis event, his involvement should be made clear. 

​The Panel noted that the second of the studies, Kiss et al, was sponsored by Genentech which marketed Lucentis in the US. The Panel noted that these two studies of US medical claims databases were used by the presenter to compare the event rate of endophthalmitis/severe intraocular inflammation for Lucentis and Eylea. The Panel considered that disclosing that VERO was sponsored by Novartis but remaining silent about Kiss et al might lead the audience to assume that Kiss et al was not sponsored by a commercially interested party. This was not so. The Panel considered the presentation was misleading in this regard. A breach of the Code was ruled. 

​Bayer alleged that the second symposium in question, entitled 'Optimizing benefits and risks in DME [diabetic macular oedema]', built a picture of a worse adverse event profile for Eylea vs Lucentis in diabetic macular oedema (DME); many of the most contentious statements were made by presenters rather than on the slides.

​Bayer alleged that data were presented selectively from published studies to minimise the apparent risk of arterio-thrombotic events with Lucentis and to support the incorrect assertion that Eylea had a worse safety profile than Lucentis in DME. Overall, the symposium misrepresented the safety profile of Eylea compared with Lucentis. Given the 'takehome' impact on the audience, Bayer, alleged that the impression given about the safety profile of Eylea in DME was in breach of the Code. 

​The Panel noted that Bayer complained about the overall impression created of the safety profile of Eylea in diabetic macular oedema. In that regard, although the symposium had consisted of three presentations and a question and answer session, the Panel considered the symposium as a whole and not each of its component parts separately. 

The Panel noted that both Lucentis and Eylea were antineovascularisation agents, they prevented endothelial cell proliferation and the formation of microvascular vessels as well as vascular leakage, all of which were thought to contribute, inter alia, to diabetic macular oedema. The medicines did this by inhibiting vascular endothelial growth factor (VEGF). Lucentis inhibited VEGF A whilst Eylea inhibited VEGF A and the related placental growth factor (PIGF). Slide 30 compared the products. Eylea was a larger molecule than Lucentis and its structure contained an Fc (fragment crystallisable) fragment of a human immunoglobulin. Lucentis had no Fc fragment. The potential side-effect of systemic administration of anti-VEGF treatment in oncology patients was discussed. From the SPCs for Lucentis and Eylea (both administered intravitreally) it appeared that systemic effects from the inhibition of VEGF was a possibility. In a question and answer session the Panel noted that speakers stressed that ideally an anti-VEGF agent which would stay in the eye, and thus not cause systemic side-effects, would be one without an Fc portion ie Lucentis and not Eylea. The speakers also referred to the fact that there was 5 year data for Lucentis but only 2 year data for Eylea. 

The Panel noted the data presented and that there was longer term data for Lucentis as it was available before Eylea. The Panel considered that much had been made of the differences between the molecules and the impression was given that this might impact on safety. This difference was not set in the context of the information in the SPC which was similar for Eylea and Lucentis. 

Overall, the Panel considered that the take home message was, as alleged, that the safety profile for Lucentis was more favourable than that for Eylea and that real differences in that regard would be seen in the clinic. On balance that Panel considered that there was insufficient data to show that this was so and that the symposium overall was misleading in that regard. A breach of the Code was ruled. The comparison of the two medicines was thus misleading and a breach of the Code was ruled. The impression of a significant clinical difference between Eylea and Lucentis could not be substantiated and breaches of the Code were ruled.

​​In summary, Bayer was concerned that two Novartis-sponsored symposia at the ophthalmology congress misleadingly compared the safety profiles of Lucentis and Eylea. In the first symposium the misrepresentation of safety occurred in the context of superlative promotional claims which related to the efficacy of Lucentis and exaggerated claims about the flexibility of its new posology. In the second symposium implications based upon data irrelevant to the dosages and indications under discussion, verbal comment and the misleading presentation of Lucentis safety data combined to build a false picture of the comparative safety of Eylea vs Lucentis and to raise unfounded concerns in the minds of prescribers about the safety of Eylea in its newest indication. 

​In addition, Bayer considered that there was clear evidence in the examples given above of repeated, serious misrepresentations of safety data and disregard for the Code, such that Novartis had failed to maintain high standards and had brought the industry into disrepute. Taking everything into consideration, Bayer alleged breaches of the Code including Clause 2. 

The Panel noted its rulings above. It considered that the misleading presentation of the data meant that high standards had not been maintained and a breach of the Code was ruled. 

The Panel noted that the supplementary information to Clause 2 referred to examples of activities likely to be in breach of Clause 2 and these included prejudicing patient safety. The Panel noted that although it considered that the symposium had presented a misleading impression of the comparative safety profiles of Lucentis and Eylea, patient safety would not have been put at risk. The Panel noted its rulings above but nonetheless did not consider that its rulings of breaches of the Code in this case amounted to a breach of Clause 2 and no breach was ruled.​